I was able to email w/ Chris Williams <williams@brewersassociation.org> and give him transferee name, etc.
Just remember that new ticket holder(s) have to buy membership to AHA and give Chris the
member #.

How does one register for the lectures and other individual events at the conference? Is it the day of? If so how long is the line usually? Would I need to show up pretty early?

You just walk in the room before the scheduled lecture time and take a seat. No lines, no registration. Some are more popular than others so a few might be standing, but most I've been to at the last three conferences had seats available. Show up ~5 minutes early and you shouldn't have a problem with a seat.

The only thing you may need to register for are pre-conference events if you're going to those. You don't register for say Club Night or Pro Brewers Night. There's lines for those events but they move fairly quickly, as they really just check you have a wristband and name tag.